13. Our boss has been being waited since early morning.

14. Grass on the meadow was being eaten by the sheep.

15. Is milk made by a cow?

16. A thief had been caught by us before he ran away.

17. Their children are always taken care of by parents.

18. The roof of the house was repaired yesterday.

19. Our boss's question hasn't been answered yet.

20. Wild animals had been tamed before they were brought to the circus.

21. Is this letter going to be mailed soon?

14. Grass on the meadow was being eaten by the sheep
15. Is milk made by a cow
16. A thief had been caught by us before he ran away
17. Their children are always taken care of by parents
18. The roof of the house was repaired yesterday

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